WO2012004182A1 - A yieldable lighting column - Google Patents
A yieldable lighting column Download PDFInfo
- Publication number
- WO2012004182A1 WO2012004182A1 PCT/EP2011/060989 EP2011060989W WO2012004182A1 WO 2012004182 A1 WO2012004182 A1 WO 2012004182A1 EP 2011060989 W EP2011060989 W EP 2011060989W WO 2012004182 A1 WO2012004182 A1 WO 2012004182A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- column
- shell
- irons
- collision
- vehicle
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/08—Lighting devices intended for fixed installation with a standard
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/623—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection
- E01F9/631—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection specially adapted for breaking, disengaging, collapsing or permanently deforming when deflected or displaced, e.g. by vehicle impact
- E01F9/635—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection specially adapted for breaking, disengaging, collapsing or permanently deforming when deflected or displaced, e.g. by vehicle impact by shearing or tearing, e.g. having weakened zones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
- B21C37/0803—Making tubes with welded or soldered seams the tubes having a special shape, e.g. polygonal tubes
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/623—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection
- E01F9/631—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection specially adapted for breaking, disengaging, collapsing or permanently deforming when deflected or displaced, e.g. by vehicle impact
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/02—Structures made of specified materials
- E04H12/08—Structures made of specified materials of metal
Definitions
- the present invention relates to a yieldable lighting column, comprising an elongated, continuous sheet metal shell with a polygonal, preferably octagonal, cross- section with internal, stabilizing irons internally attached to the shell. It also relates to a method of providing such a lighting column with the ability to yield to a colliding vehicle with minimum damages to the vehicle and its passengers.
- Lighting columns placed at the roadside, where there is a risk for a vehicle leaving the road for some reason to collide with them, are customary of a yieldable construction.
- the hit column will bend over the colliding vehicle and absorb the collision energy in such a way that the damages to the vehicle and its passengers will be kept at a minimum.
- the stabilizing function can be performed by rod irons internally attached to the shell.
- the shell is made of "a thin gauge metal sheet", in practice with a thickness of well under 1 mm. This shell does not have enough stability in any part, and therefore all sides of the shell have to be internally stabilized over their entire lengths and practically over their entire widths by strips.
- the construction is in practice a shell of thick material with weakened corner portions.
- the deformation properties at a collision are not satisfactory, because "the giving way ability is achieved ... because of the bent corner portions joining the intermediary flat areas stabilized by the strips" (page 7, lines 2-4).
- the less satisfactory deformation properties have to do with the lack of free shell areas that should have the possibility to buckle under the forces from a collision.
- the irons are flat irons, which are internally attached to each second of the sides of the shell and extend at least in the longitudinal area of the column, where a vehicle may hit the column at a collision.
- Fig 1 illustrates a collision between a car and a yieidable lighting column
- Figs 2 and 3 are sections through a conventional yieidable lighting column before and after a collision, respectively,
- Figs 4 and 5 are sections through a yieidable lighting column according to the invention before and after a collision, respectively, and
- Figs 6 and 7 correspond to Figs 4 and 5, respectively, but depict the coll ision occurring from a slightly different angle.
- FIG. 1 A collision between a yieidable lighting column 1 and a car 2 is illustrated in Fig 1.
- the column 1 (provided with a non-shown lighting arrangement, normally at or towards its top) is standing upright, as shown in greyish lines. In a way not shown or described, it is connected (for anchoring to the ground) to a ground attachment of a suitable kind.
- a car 2 hits a lighting column 1, it is of advantage for the driver and passengers of the car, if the column is yieidable, so that it can absorb the kinetic energy of the colliding car over a longer distance, than with a stiff column. As shown in Fig 1, the colliding car 2 will thus bend down the first portion of the column 1 to the ground, whereas a further portion of the column will be flattened and bent over the car by its front.
- FIG. 1 A section through a presently used, yieidable lighting column is shown in Fig
- the column is built-up of an octagonal sheet metal shell 3, which preferably tapers slowly upwards.
- the shell can be built up of several wall units, preferably welded together.
- the shell structure is reinforced by internal round irons 4, which are attached to the shell, preferably by spot welding or continuous welding. In the shown case, four round irons 4 are attached to the middle of each second of the eight side walls. The number of round irons 4 and their positions within the shell can vary.
- the column shell can have more or less sides than the shown octagonal column, and it can have a rounded cross-sectional shape.
- Fig 4 a section through a column according to the invention is shown. Also in this case the column 1 has an octagonal section and has a sheet metal shell 3, which tapers slowly upwards continuously or stepwise.
- the sheet metal material normally galvanized iron
- the sheet metal material may typically have a thickness of some 1.5 mm, but other thicknesses are possible.
- the sheet metal shell 3 is internally provided with plate irons 5 (instead of the conventional round irons 4, shown in Figs 2 and 3). These plate irons 5 may preferably be fastened to the sheet metal shell 3 by continuous welding or spot welding.
- the plate irons 5 may typically have a thickness of some 4 mm, but other thicknesses may be chosen.
- the width of the plate irons 5 are chosen to be well under the wi dth of each side of the octagonal shell 3.
- the plate irons 5 do not need to extend along the entire height of the column 1; their presence is most important in the area in which a collision with intended bending can occur.
- plate irons 5 are provided, namely at each second of the internal sides of the octagonal column.
- the intended function may, however, in principle be accomplished with fewer or more plate irons.
- the irons 4 or 5 When the column 1 is standing upright (Figs 2 and 4), the irons 4 or 5 will provide it with the necessary stability and strength, irrespective if they are round irons 4 or flat irons 5. The function at collision and bending is, however, different.
- Fig 5 illustrates a collision at a column side without flat iron.
- the column will be flattened, as illustrated, and the column sides perpendicular to the collided side will be bent together. More importantly, however, is that the flat irons 5 follow in the flattening and will attain positions substantially parallel to each other, so that their stiffening function is greatly diminished. Differently speaking, each flat iron 5 will strive to attain a position with the least resistance against bending, or will in other words turn its flat side to the direction of the external force at the collision.
- Fig 7 illustrates a coiftsioo against a corner of the column. It appears that a!so here the flat irons 5 will attain positions with their flat sides directed towards the force of the collision, so that the stiffness of the column is greatly decreased.
- the effect of the provision of the flat irons 5 is mainly that the deformation or bending of the lighting column occurs under decreased deformation force, whereas the intended stability in the normal case with an upright column is maintained. The damages to die colliding vehicle and its passengers will be decreased, while the intended bending of the column is maintained.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/805,497 US20140043836A1 (en) | 2010-07-08 | 2011-06-30 | Yieldable lighting column |
AU2011275921A AU2011275921A1 (en) | 2010-07-08 | 2011-06-30 | A yieldable lighting column |
EP11729609.5A EP2591170A1 (en) | 2010-07-08 | 2011-06-30 | A yieldable lighting column |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE1050753A SE535317C2 (en) | 2010-07-08 | 2010-07-08 | Resilient lighting pole as well as ways to achieve a lighting pole |
SE1050753-1 | 2010-07-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012004182A1 true WO2012004182A1 (en) | 2012-01-12 |
Family
ID=44628012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2011/060989 WO2012004182A1 (en) | 2010-07-08 | 2011-06-30 | A yieldable lighting column |
Country Status (5)
Country | Link |
---|---|
US (1) | US20140043836A1 (en) |
EP (1) | EP2591170A1 (en) |
AU (1) | AU2011275921A1 (en) |
SE (1) | SE535317C2 (en) |
WO (1) | WO2012004182A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2008229948B2 (en) * | 2008-10-15 | 2016-08-11 | Plasgain Pty Ltd | An Impact Absorbing Pole |
CN110425471B (en) * | 2019-08-03 | 2022-03-15 | 东莞市金建达建筑有限公司 | Urban road lighting system |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3196990A (en) * | 1961-03-23 | 1965-07-27 | Mc Graw Edison Co | Tapered structural member and method of making the same |
US4248025A (en) * | 1979-08-08 | 1981-02-03 | Unarco Industries, Inc. | Knock down pole construction |
WO1999002779A1 (en) | 1997-07-09 | 1999-01-21 | Lars Svensson | Method for manufacturing a post and post manufactured according to said method |
WO2010136833A1 (en) * | 2009-05-25 | 2010-12-02 | Seri Q Sign A/S | Anchoring assembly for yieldable pole |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1959756A (en) * | 1931-08-19 | 1934-05-22 | Pittsburgh Crucible Steel Comp | Columnar structure |
US4196550A (en) * | 1977-11-09 | 1980-04-08 | Lars Svensson | Post |
US4435242A (en) * | 1981-11-26 | 1984-03-06 | Bristol Composite Materials Engineering Limited | Elongate structure |
SE446640B (en) * | 1983-04-08 | 1986-09-29 | Lars Svensson | POST consisting of a weakened metal bearing profile made of metal |
SE447590B (en) * | 1985-06-18 | 1986-11-24 | Lars Svensson | POST |
US20020056250A1 (en) * | 2000-04-24 | 2002-05-16 | Cash David W. | Method and apparatus for increasing the capacity and stability of a single-pole tower |
US7116282B2 (en) * | 2003-10-14 | 2006-10-03 | John Trankina | Tower reinforcement |
US20050196235A1 (en) * | 2004-03-04 | 2005-09-08 | Carsonite International | Roadway delineator |
US7464512B1 (en) * | 2004-03-10 | 2008-12-16 | Perina Mark J | Hollow structural member |
US20090300996A1 (en) * | 2005-06-21 | 2009-12-10 | Tim Jones | System for reinforcing towers and the like |
DE202007003842U1 (en) * | 2007-03-15 | 2007-05-24 | Mecal Applied Mechanics B.V. | Mast for wind turbine has at least curved sections of prefabricated wall parts in different annular mast sections that are identical, at least in cross-section |
SE531195C2 (en) * | 2007-04-13 | 2009-01-13 | Ortic 3D Ab | Resilient post and way to manufacture such |
BE1017649A7 (en) * | 2007-06-15 | 2009-03-03 | Safety Product Nv | ROAD SAFE POLE. |
ES2330482T3 (en) * | 2007-06-20 | 2009-12-10 | Siemens Aktiengesellschaft | TOWER OF WIND TURBINE AND METHOD TO BUILD A TOWER OF WIND TURBINE. |
CA2794871A1 (en) * | 2010-04-01 | 2011-10-06 | Michael Griffiths | Utility pole |
-
2010
- 2010-07-08 SE SE1050753A patent/SE535317C2/en unknown
-
2011
- 2011-06-30 AU AU2011275921A patent/AU2011275921A1/en not_active Abandoned
- 2011-06-30 WO PCT/EP2011/060989 patent/WO2012004182A1/en active Application Filing
- 2011-06-30 EP EP11729609.5A patent/EP2591170A1/en not_active Ceased
- 2011-06-30 US US13/805,497 patent/US20140043836A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3196990A (en) * | 1961-03-23 | 1965-07-27 | Mc Graw Edison Co | Tapered structural member and method of making the same |
US4248025A (en) * | 1979-08-08 | 1981-02-03 | Unarco Industries, Inc. | Knock down pole construction |
WO1999002779A1 (en) | 1997-07-09 | 1999-01-21 | Lars Svensson | Method for manufacturing a post and post manufactured according to said method |
WO2010136833A1 (en) * | 2009-05-25 | 2010-12-02 | Seri Q Sign A/S | Anchoring assembly for yieldable pole |
Non-Patent Citations (1)
Title |
---|
See also references of EP2591170A1 |
Also Published As
Publication number | Publication date |
---|---|
SE535317C2 (en) | 2012-06-26 |
US20140043836A1 (en) | 2014-02-13 |
AU2011275921A2 (en) | 2013-09-12 |
EP2591170A1 (en) | 2013-05-15 |
SE1050753A1 (en) | 2012-01-09 |
AU2011275921A1 (en) | 2013-01-10 |
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